Island



(N; Model.) 2 SheetsSheet 1.

H. & J. W. COLLINS. I STOP MOTION FOR TWISTING MACHINES. No. 517,030.

Patent ed Mar. 27, 1894.

INVENTOR 5' WITNESSES:

(No Model.) 2 Sheets-Sheet 2.

H. & J. W. COLLINS. STOP MOTION FOR TWISTING MAGHINES.

No. 517,030. Patented Mar. 27, 1894. V

UNITED STATES HENRY COLLINS AND JOSEPH W. COLLINS, OF PAWTUCKET, RHODE ISLAND PATENT OFFICE.

STOP-MOTION FOR TW ISTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 517,030, dated March 27, 1894.

Application filed September 23, 1893- Serial No. 486,304. (No model.)

To aZZ whom it may concern.-

Be it known that we, HENRY COLLINs and J osnrn W. COLLINS, of Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Stop-Motions for Twisting- Machines; and We do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This inventionrelates to that class of mechanical devices called stop motions, applied to machines for various uses for the purpose of causing them to stop automatically, when not running properly. In this case, the application is made to a f twister, so called, a machine for doubling and twisting two or more yarns, to make a single thread. It is fully illustrated in the accompanying drawings.

Figure 1, represents in perspective, the stop I motion applied to one spindle of a twister,

and the rolls and spools that supply it with yarn. Fig. 2, is a side view of the same, partly in section, showing the position of the parts, when the stop motion has operated to stop the roll and traveler.

It is not deemed necessary to set forth the necessity for these stop motions on this class of machines, to those skilled in the art, and for whom this description is intended, as the loss of material and injury to the thread resulting from running single, are well known. The main points in such devices are to stop the operating parts as soon as possible, when necessary, and at a point where the momentum of these parts will have the least effect in continuing the operation afterthe break that has caused the stoppage. It this case, the stop is made by separating the rolls that draw the yarn from the spools for the action of the spindle, and by stopping the traveler on the ring, to cause the thread to break there, and prevent anyof the imperfect thread from being wound on the bobbin by the momentum of the running parts.

In Fig. 1, all the parts are shown in running order to double and twist three yarns to form a single threadand wind it on the spindle bobbin, each spindle and its set of devices being operated independently of the others in the twister, only one set being shown.

A, is the end frame of the twister, C, the top board, and B, is the spool board held on supports'on the board C, to hold the yarn spools c, c, 0. An inverted box or trough D, that covers the flanged roll is, is attached to the top of the board C. This trough supports the rolls a, b, that draw the yarn e, from the spools c, and deliverit to the traveler n, to be twisted and wound on the bobbin f. The bearings of the roll I), are notshown. The top roll a, is held in slotted bearings attached to the trough D, the slots allowing the roll a, to rise and fall so as to rest on the roll b, and cause a friction on the yarn between them, sufficient to draw the yarn off of the spools 0; but when the roll is raised off of the roll I), by the wedges j,j, that move forward under the'collars h, on the journals of that roll, the draft on the yarn ceases. The wedges 3, are attached to the upper end of a vertical bar r, that is held on a horizontal bolt h, sliding in bearings in the front and back of the trough D. The bar 0", extends down through an opening in the guide-board t, as far as the ring-rail g, descends, and a plate 2', held loosely in a guide staple y, fast in top of the ring rail, has a socket s, at its inner end, fitted to slidefreely on the bar 1", as the ring rail rises andfalls in laying the thread on the bobbin. The plate c, is on a level with the upper part of the ring u, so that when it is slid in toward thering, it will intercept the traveler n, and cause the thread to break at that point. A shaft n, having a flanged collar or roll 7c, fast on it, held in bearings not shown, in the trough D, (see Fig.2) receives a continuous revolving motion in the direction indicated by the arrow below it. A short rod Z, is held in bear ings on the trough D, to support a series of arms s',s', s, or one for each yarn spool c. The arms 8, have each a guide wire 0, attached to it to receive one of the yarns e, in passing between the spool and the rolls a, b, and a drop wire o, is also attached to the outer end of each arm. These Wires 0, extend down through openings in the trough 1), so that when there is no' yarn in them to hold them up, they will drop down far enough to be struck by one of the flanges on the roll 7c. The bolt h, has a bar m, fast on it, just in IOC the yarn from the spools.

front of the drop wires Q), clear of the flanges 7c; but in position to be struck by either of the drop wires that may be thrown forward by one of the flanges. The inner end of the bolt h, has a hollow made on its top, and the end is cut away to form an incline e, to receive the end of an arm 19, pivoted at its other end, to a standard fast on the top board 0. A weight w, is hung on the arm, to make it press on the bolt h, when the end ofthe arm is in the hollow on the bolt, as in Fig. 1, and hold it in place, and to give an added impulse forward, to the bolt, when it has been started by one of the drop wires being struck by a flange on collar is, causing it to push the bolt by the bar m, and bring the incline on the bolt, under the end of the arm.

The parts just described, are those relating mainly to stopping the twisting and winding process when a break occurs in either of the yarns between the spools and the rolls a, b, in which the operation is as follows: lVhen the bolt h, is pushed back, the end of the arm 19, will rest in the hollow near the end of the bolt, as seen in Fig. 1, and keep it in place, and the wedges j, will be held back so that the roll a, will bear on the roll I), and, drawing the yarns from the spools 0, will hold the arms 8', and the wires v, up clear of the flanges on the roll 70, and the plate 2', will be held back clear of the traveler, as the bar 1-, that holds it, is carried back with the bolt h. This is the position shown in Fig. 1. Where a yarn breaks between the rolls (1,1), and spools c, as shown in Fig. 2, the arm 8', will fall, and the drop wire 4), attached to it, will drop, so as to be struck by one of the flanges on the roll 70, and be pushed against the bar m, carrying the bolt h, and bar 0', forward, and the wedgesj, under the journals of roll at, raising it from the roll I), and stopping the draft of At the same time, the plate 71, will be moved forward against the ring to, stopping the traveler 'n, and breaking the thread in it, and preventing any thread from winding on the bobbin.

To provide for a break of the thread between the rolls a, b, and the bobbin f, a lever a, is pivoted at its middle to the bar 7', and has a drop wire 6, attached to its inner end, in the same position as the drop wires before described, and also has a pin 0, in its front end, bearing against the under side of the thread r. By the breaking of the thread after it has left the rolls, the outer end of the lever a, will be allowed to rise, and the drop wire e, in its back end, will fall, and come in contact with one of the flanges on the roll it, with the same result, of raising the roll a, and stopping the traveler n, as just described in the case of the other drop wires, when the yarn breaks. The shaft carrying the roll I), and also the shaft a, carrying the flanged collar 70, are connected to the driving shaft of the twister by either gears or belts in any of the usual ways, to receive therefrom a continuous motion when the machine is in operation, as the stop motion does not stop the whole twister; but only the parts connected with a spindle where a yarn or thread breaks.

Having thus described our improvements, we claim as our invention and desire to secure by Letters Patent- 1. In a stop motion for twisting machines, the combination of a ring and traveler, a pair of rolls to draw the yarn from the spools, a roll separating device, a device substantially as described for stopping the traveler, and drop wires to put said separating device and device for stopping the traveler in operation when one of the yarns breaks, substantially as described.

2. In a stop motion for twisters, the combination of a ring and traveler, rolls to draw the yarn from the spools, a rod carrying a plate at its lower end, and a roll separating device at its opposite end, a lever pivoted at its middle to said rod and having one end bearing against the thread between the rolls and the traveler, and a drop wire attached to the other end of said lever and means acting against said drop wire to operate the roll separating device and move said plate into the path of the traveler, substantially as described.

3. In a stop motion, a ring and traveler, yarn drawing rolls, a continuously revolving flanged roll, in combination with a bolt held in bearings transversely thereto, and carrying a rod provided with wedge-shaped plates to separate the yarn drawing rolls and also a plate to stop the traveler, drop wires to cause the flanged roll to operate said bolt when the yarn breaks and stop the yarn drawing rolls and traveler, substantially as described.

4. In a stop motion, a ring and traveler, a continuously revolving flanged roll, in combination with a bolt held in bearings transversely thereto, a bar carried by the bolt and having a plate on the lower part thereof, drop wires to cause said flanged roll to operate said bolt when a yarn or thread breaks, and move the plate into the path of the traveler to thereby stop the same, substantially as described.

HENRY COLLINS. JOSEPH WV. COLLINS. Witnesses:

E. B. READ,

BENJ. ARNOLD. 

